212145660143 has 16 divisors (see below), whose sum is σ = 224942922720. Its totient is φ = 199383991296.

The previous prime is 212145660131. The next prime is 212145660157. The reversal of 212145660143 is 341066541212.

It is a cyclic number.

It is not a de Polignac number, because 212145660143 - 2¹⁶ = 212145594607 is a prime.

It is a super-2 number, since 2×212145660143² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212145660193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48245621 + ... + 48250017.

It is an arithmetic number, because the mean of its divisors is an integer number (14058932670).

Almost surely, 2^212145660143 is an apocalyptic number.

212145660143 is a deficient number, since it is larger than the sum of its proper divisors (12797262577).

212145660143 is a wasteful number, since it uses less digits than its factorization.

212145660143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7786.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 212145660143 in words is "two hundred twelve billion, one hundred forty-five million, six hundred sixty thousand, one hundred forty-three".